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September 18, 2014

September 18, 2014

Posted by **widyan** on Saturday, January 21, 2012 at 1:43am.

- mathematics -
**drwls**, Saturday, January 21, 2012 at 2:10amB + R = 238

3B/7 + 5R/8 = 124

Multiply both sides of the last equation by 8/5.

24B/35 + R = 198.4

Subtract the above equation from the first one.

11B/35 = 39.6

Multiply both sides by 35/11

B = 126

R = 112 is the number of red marbles.

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